Attica Upground Reservoir is an earth dam located in Seneca County, Ohio, built in 1955. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 2,470 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Attica Upground Reservoir
The primary purpose of Attica Upground Reservoir is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Village of Attica (local government). It impounds the Honey Creek - Offstream near Caroline.
The dam stands 14 feet tall and stretches 2,470 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 36 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/20/2023.
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Location
| State | Ohio |
| County | Seneca |
| Nearest City | Caroline |
| River/Stream | Honey Creek - Offstream |
| Coordinates | 41.05278, -82.89028 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 2,470 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 36 acre-ft |
| Max Storage | 36 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Village of Attica |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/20/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH00800 |
| Federal ID | OH00800 |
| More Info | State Dam Safety Program |